Testosterone Isocaproate

Sustanon 250 component

Testosterone TRT aas IM Published Clinical Data

Half-life

7.1 days

Time to Peak

36 hr

Steady State

~36 days

Bioavailability

100%

Dose Range

25–200 mg

Frequency

Weekly

Overview

Medium-acting testosterone ester with 6-carbon branched chain (4-methyl-pentanoic acid). Found exclusively in Sustanon 250 as the 60mg component. No standalone pharmaceutical product.

Mechanism of Action

Depot injection releases testosterone via ester hydrolysis.

Dosing Information

Route Dose Range Half-life Tmax Frequency
Intramuscular (IM) 25–200 mg 7.1 days 36 hr Weekly, Twice weekly

Storage & Handling

room_temperature — Store at 20-25C (68-77F). Protect from light.

Used in Regimens

Testosterone Isocaproate is not currently part of any catalog regimen.

Data Sources

  • ester analogy Behre & Nieschlag 1998 — Ester PK Estimates

Related Tools

Medication Level Plotter

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Dose Calculator

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Split Dose Calculator

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Doseline provides informational tools only. It is not a medical device and does not provide medical advice. Always consult a qualified healthcare provider.

Doseline provides informational tools only. It is not a medical device and does not provide medical advice. Always consult a qualified healthcare provider.